Keep in mind, we have ALOT more cargo capacity then the average Egger, but here's what goes with us.
22 piece SAE/Metric combination wrench set.
1/4 and 1/2" ratchets, 1/2" breaker bar.
aprox 50 sockets, SAE and metric.
20 piece screwdriver bit set, doubles as my hex and torx keys, I only use them to fix other poeples rigs.
3 flat screwdrivers, one very large for double duty as a pry bar.
5 piece punch/chisel set
12" hacksaw frame and several blades, including some wood blades (doubles as a camp saw.)
sabre grip for the saw blades
3 vice grips
5lb single jack sledge
self igniting plumbers torch
several sticks of brazing rod, along with some 1/8th" 7018 welding rod.
large flat, meduim sized half round, and small round files.
Digital Multimeter, will double as the battery
gauge for the trailer when we get that far.
crimp on electrical
connectors, roll of solder, old style soldering iron.
10" and 18" cresent wrenches
12" channel locks
Large 4way wrench.
needlenose and slip joint pliers
wood splitting wedge, useful for all sorts of stuff.
JB weld- original style
2 20' rolls of eletrical wire, 14g and 10g.
roll of baling wire.
random assortment of nuts/bolts/screws
Rubber cement, tire patches and plugs.
Cordless LED trouble light
US Army Entrenchment Tool
2 20' 3/8ths log chain, 20' nylon strap
large jumper cables, plus one smaller pair, it makes on the spot welding easier.
random rigging gear.
Depending on the tug we are using at the moment, also ad a 12v air compressor and a heavy duty come-along.
Thats what comes to mind at the moment, though I know I'm missing some stuff.